Crotoxyphos, 1000µg/ml in in hexane:acetone [9:1], 1ml

4-Chlorophenol, 100 µg/ml, Methanol, 5ml

Propachlor

n-Alkanes C10-C40 (even + pristane/phytane) 18 Analytes, each 100µg/ml in cyclohexane; units: 1x1mL, 5x1mL, 10x1mL This standard includes all the even n-paraffins + pristane and phytane. n-Decane C10 n-Dodecane C12 n-Tetradecane C14 n-Hexadecane C16